<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="index.css">
    <link rel="stylesheet" href="./css/lunbo.css">
</head>
<body>
    <h1>智慧树首页</h1>
    <div>
        <ul>
            <li><img src="./img/1.jpg" alt=""></li>
            <li><img src="./img/2.jpg" alt=""></li>
            <li><img src="./img/3.jpg" alt=""></li>
            <li><img src="./img/4.jpg" alt=""></li>
        </ul>
        <div>
            <span class="zuo">上</span><span class="you">下</span>
        </div>
        <ol>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
        </ol>
    </div>
    <content>
        <div class="content">
            这是一个牛逼的内容部分
        </div>
    </content>
    <link rel="stylesheet" href="./css/footer.css">
</head>
<body>
    <footer class="footer">
        这是一个复杂的底部文件
    </footer>
</body>
</html>